package com.hmdp.service.impl;



import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;



import com.hmdp.dto.Result;

import com.hmdp.entity.ShopType;
import com.hmdp.mapper.ShopTypeMapper;
import com.hmdp.service.IShopTypeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class ShopTypeServiceImpl extends ServiceImpl<ShopTypeMapper, ShopType> implements IShopTypeService {
    @Resource
    private StringRedisTemplate stringRedisTemplate;

    @Override
    public Result queryList() {
        String list = stringRedisTemplate.opsForValue().get("shop:type:");
        if(StrUtil.isNotEmpty(list)){
            //存在，直接返回
            List<ShopType> shopTypeList = JSONUtil.toList(list,ShopType.class);
            return Result.ok(shopTypeList);
        }
        List<ShopType> typeList = query().orderByAsc("sort").list();
        if(typeList==null|| typeList.isEmpty()){
            return Result.fail("店铺类型不存在");
        }
        stringRedisTemplate.opsForValue().set("shop:type:", JSONUtil.toJsonStr(typeList));
        return Result.ok(typeList);
    }
}
